Lens device for a variable working distance, illumination assembly, coordinate measuring machine and method

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United States of America Patent

PATENT NO 9857164
SERIAL NO

15429207

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Abstract

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A lens device for an illumination assembly, wherein the lens device comprises at least one ring region, wherein each ring region extends along a circumferential direction about a central axis of the lens device, wherein each ring region comprises a plurality of segments, wherein each segment forms a circular arc portion of a respective ring region and wherein each segment comprises a first end in the circumferential direction and a second end opposite to the first end in the circumferential direction, wherein each segment has a first refractive index at a reference wavelength at the first end at a first radial distance from the central axis and a second refractive index at the reference wavelength at the second end at the first radial distance, said second refractive index differing from the first refractive index. An illumination assembly, a coordinate measuring machine and a method are also disclosed.

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Patent Owner(s)

  • CARL ZEISS INDUSTRIELLE MESSTECHNIK GMBH;JPMORGAN CHASE BANK, N.A.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Haverkamp, Nils Aalen, DE 42 258
Seitz, Dominik Schwaebisch Gmuend, DE 35 382

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